Dersler
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Unit 122 Falling Leaves
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Unit 123 How the Dinosaurs Disappeared
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Unit 124 Acid Rain!
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Unit 125 The Weather Forecast
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Unit 126 Who Invented That?
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Unit 127 The White Noise Machine
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Unit 128 Inches and Centimeters
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Unit 129 Communicating Online
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Unit 130 Science for Girls
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Unit 131 On Stage!
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Unit 132 A Famous Portrait
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Unit 133 Leonardo da Vinci
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Unit 134 Ludwig van Beethoven
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Unit 135 A Nice Gift
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Unit 136 Collecting Stamps
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Unit 137 Rock, Paper, Scissors
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Unit 138 Man’s Best Friend
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Unit 139 The Active Leisure Center
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Unit 140 The Audition
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Unit 141 Add, Subtract, Multiply, and Divide
